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firefox_download.exe

Firefox Downloader

Download Assistant

This is part of the Air Installer, a download manager which bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed with minimal consent. The application firefox_download.exe by Download Assistant has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the AirInstaller Download Manager installer. With this installer, users are expecting to download the free Mozilla Firefox web browser but before that occurs they may be presented with additional offers, mostly potentially unwanted software or adware.
Publisher:
Download Assistant  (signed and verified)

Product:
Firefox Downloader

Version:
3.0.0.154

MD5:
d418559f80962817b6f638a309dc53aa

SHA-1:
eb1ea0cad6700ac5a24bc6d378e71ad78f59d4d3

SHA-256:
11bcbb0da7e7acaf2b2ac84d22a57feda2c37e1e74509cfff28cad5dd3e04a13

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Description:
This is also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
11/28/2024 12:46:27 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Air Software.Download.Bundler (M)
16.4.16.10

File size:
1.1 MB (1,137,568 bytes)

Product version:
3.0.0.154

Copyright:
(c) Download Assistant

File type:
Executable application (Win32 EXE)

Bundler/Installer:
AirInstaller Download Manager

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\firefox_download.exe

Digital Signature
Signed by:
Download Assistant

Authority:
Symantec Corporation

Valid from:
4/6/2016 2:00:00 AM

Valid to:
7/7/2017 1:59:59 AM

Subject:
CN=Download Assistant, O=Download Assistant, L=Victoria, S=British Columbia, C=CA

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
3F4D313EECE411E33755867DDBC09D69

File PE Metadata
Compilation timestamp:
1/30/2013 3:21:56 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:XxGfmrjKqpMdtOdMAXwpIwjWCLGJY81+ySMmFrTYte9MHE6EJakd:g+XKftOVXwpljWrCrC9NEJakd

Entry address:
0x113BC

Entry point:
55, 8B, EC, 83, C4, A4, 53, 56, 57, 33, C0, 89, 45, C4, 89, 45, C0, 89, 45, A4, 89, 45, D0, 89, 45, C8, 89, 45, CC, 89, 45, D4, 89, 45, D8, 89, 45, EC, B8, 2C, 00, 41, 00, E8, E8, 51, FF, FF, 33, C0, 55, 68, 9E, 1A, 41, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 5A, 1A, 41, 00, 64, FF, 32, 64, 89, 22, A1, 48, 5B, 41, 00, E8, 16, D8, FF, FF, E8, 65, D3, FF, FF, 80, 3D, DC, 2A, 41, 00, 00, 74, 0C, E8, 2B, D9, FF, FF, 33, C0, E8, 80, 32, FF, FF, 8D, 55, EC, 33, C0, E8, E2, A3, FF, FF, 8B, 55, EC, B8, 50, 86...
 
[+]

Developed / compiled with:
Microsoft Visual C++

Code size:
65.5 KB (67,072 bytes)

The file firefox_download.exe has been seen being distributed by the following URL.

http://files.free-browsers.co/1460464974WGQzRU5LRU0zRmtsR0VlQ2MzekZ4SlZWUnFlQHFkJnFkJkZRWVBOUUNGN0hUR0d5RFRRWVVHVDdFUXFkJkhLVEdIUVpxZCZIS1RHSFFaNktQVVZDTk42R1A2V1U3R1pHc01HYXhsSERoZ0Rla0RmRmxraGdsRmpnY0hmZGRsaGRIR2dkZWZHaEVjakZnRUNnaEdpRGlHZmhoZGpDamdDRGdkRWZqc1VLRngmKXxeJjsgNmRsY2dzV0tGeGNAOkAtQS4pJF9naWxFR0Zma2VGaEhoc0NISEtOS0NWRzZLT0NJR3hzUlRRRldFVjZLT0NJR3hzUHgmS1RHSFFadyVRWVBOUUNGR1RzSEtOR1BDT0d4SEtUR0hRWjZGUVlQTlFDRg==

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